Photocatalytic degradation of Acid Red 88 using Au-TiO(2) nanoparticles in aqueous solutions.
Metal loaded semiconductors in general possess greater photocatalytic activity than pure semiconductors. Hence, with an attempt to achieve higher photocatalytic activity, Au-TiO(2) photocatalysts were prepared by deposition-precipitation method and used for the photocatalytic degradation of an azo dye (Acid Red 88; AR88). The materials were characterized by different analytical techniques. A possible mechanism for the photocatalytic degradation of AR88 by Au-TiO(2) in the absence and presence of other oxidizing agents (peroxomonosulfate (PMS), peroxodisulfate (PDS) & hydrogen peroxide (H(2)O(2))) has been proposed. The extent of mineralization of the target pollutant was also evaluated using Total Organic Carbon (TOC) analysis.
Sathish Kumar
Panneer Selvam
PS
Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy 620 015, India.
Sivakumar
Radhakrishnan
R
Anandan
Sambandam
S
Madhavan
Jagannathan
J
Maruthamuthu
Pichai
P
Ashokkumar
Muthupandian
M
D002384:Catalysis; D006046:Gold / Q000737:chemistry*; D007700:Kinetics; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles; D010777:Photochemistry; D012235:Rhodamines / Q000737:chemistry*; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
D012235:Rhodamines; D012996:Solutions; C009495:titanium dioxide; C022027:lissamine rhodamine B; D006046:Gold; D014025:Titanium